In the 23 states that offer Choose Life license plates, it's easy. Just go to your local mall parking lot and place literature on the windshields of cars with pro-life plates! Literature is available through the National Right to Life Committee; unfortunately, since these handouts were made with churches in mind, they contain a Bible verse. I recommend using the information in the NRLC handouts and other sources to create your own.
The states with pro-life license plates are Alabama, Arizona, Arkansas, Connecticut, Delaware, Florida, Georgia, Hawaii, Indiana, Kentucky, Louisiana, Maryland, Massachusetts, Mississippi, Missouri, Montana, Ohio, Oklahoma, Pennsylvania, South Carolina, South Dakota, Tennessee, and Virginia.
Let us know how it goes by writing in the comments section or emailing info(at)secularprolife.org!